/**
 * mlpushmenu.js v1.0.0
 * http://www.codrops.com
 *
 * Licensed under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2013, Codrops
 * http://www.codrops.com
 */
;
(function (window) {

    'use strict';

    function extend(a, b) {
        for (var key in b) {
            if (b.hasOwnProperty(key)) {
                a[key] = b[key];
            }
        }
        return a;
    }

    // taken from https://github.com/inuyaksa/jquery.nicescroll/blob/master/jquery.nicescroll.js
    function hasParent(e, id) {
        if (!e) return false;
        var el = e.target || e.srcElement || e || false;
        while (el && el.id != id) {
            el = el.parentNode || false;
        }
        return (el !== false);
    }

    // returns the depth of the element "e" relative to element with id=id
    // for this calculation only parents with classname = waypoint are considered
    function getLevelDepth(e, id, waypoint, cnt) {
        cnt = cnt || 0;
        if (e.id.indexOf(id) >= 0) return cnt;
        if (classie.has(e, waypoint)) {
            ++cnt;
        }
        return e.parentNode && getLevelDepth(e.parentNode, id, waypoint, cnt);
    }

    // http://coveroverflow.com/a/11381730/989439
    function mobilecheck() {
        var check = false;
        (function (a) {
            if (/(android|ipad|playbook|silk|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4)))check = true
        })(navigator.userAgent || navigator.vendor || window.opera);
        return check;
    }

    // returns the closest element to 'e' that has class "classname"
    function closest(e, classname) {
        if (classie.has(e, classname)) {
            return e;
        }
        return e.parentNode && closest(e.parentNode, classname);
    }

    function mlPushMenu(el, trigger, options) {
        this.el = el;
        this.trigger = trigger;
        this.options = extend(this.defaults, options);
        // support 3d transforms
        this.support = Modernizr.csstransforms3d;
        if (this.support) {
            this._init();
        }
    }

    mlPushMenu.prototype = {
        defaults: {
            // overlap: there will be a gap between open levels
            // cover: the open levels will be on top of any previous open level
            type: 'overlap', // overlap || cover
            // space between each overlaped level
            levelSpacing: 40,
            // classname for the element (if any) that when clicked closes the current level
            backClass: 'mp-back',
            dockSide: 'left'
        },
        _init: function () {
            // if menu is open or not
            this.open = false;
            // level depth
            this.level = 0;
            // the moving wrapper
            this.wrapper = document.getElementById('mp-pusher');
            // the mp-level elements
            this.levels = Array.prototype.slice.call(this.el.querySelectorAll('div.mp-level'));
            // save the depth of each of these mp-level elements
            var self = this;
            this.levels.forEach(function (el, i) {
                el.setAttribute('data-level', getLevelDepth(el, self.el.id, 'mp-level'));
            });
            // the menu items
            this.menuItems = Array.prototype.slice.call(this.el.querySelectorAll('li'));
            // if type == "cover" these will serve as hooks to move back to the previous level
            this.levelBack = Array.prototype.slice.call(this.el.querySelectorAll('.' + this.options.backClass));
            // event type (if mobile use touch events)
            this.eventtype = mobilecheck() ? 'touchstart' : 'click';
            // add the class mp-overlap or mp-cover to the main element depending on options.type
            classie.add(this.el, 'mp-' + this.options.type);
            // check side of nav(hoangnm added)
            if(this.options.dockSide == 'right')
                classie.add(this.el, 'right-side');
            else
                classie.add(this.el, 'left-side');

            // initialize / bind the necessary events
            this._initEvents();
        },
        _initEvents: function () {
            var self = this;

            // the menu should close if clicking somewhere on the body
            var bodyClickFn = function (el) {
                self._resetMenu();
                el.removeEventListener(self.eventtype, bodyClickFn);
            };

            // open (or close) the menu
            this.trigger.addEventListener(this.eventtype, function (ev) {
                ev.stopPropagation();
                ev.preventDefault();
                if (self.open) {
                    self._resetMenu();
                }
                else {
                    self._openMenu();
                    // the menu should close if clicking somewhere on the body (excluding clicks on the menu)
                    document.addEventListener(self.eventtype, function (ev) {
                        if (self.open && !hasParent(ev.target, self.el.id)) {
                            bodyClickFn(this);
                        }
                    });
                }
            });

            // opening a sub level menu
            this.menuItems.forEach(function (el, i) {
                // check if it has a sub level
                var subLevel = el.querySelector('div.mp-level');
                if (subLevel) {
                    el.querySelector('a').addEventListener(self.eventtype, function (ev) {
                        ev.preventDefault();
                        var level = closest(el, 'mp-level').getAttribute('data-level');
                        if (self.level <= level) {
                            ev.stopPropagation();
                            classie.add(closest(el, 'mp-level'), 'mp-level-overlay');
                            self._openMenu(subLevel);
                        }
                    });
                }
            });

            // closing the sub levels :
            // by clicking on the visible part of the level element
            this.levels.forEach(function (el, i) {
                el.addEventListener(self.eventtype, function (ev) {
                    ev.stopPropagation();
                    var level = el.getAttribute('data-level');
                    if (self.level > level) {
                        self.level = level;
                        self._closeMenu();
                    }
                });
            });

            // by clicking on a specific element
            this.levelBack.forEach(function (el, i) {
                el.addEventListener(self.eventtype, function (ev) {
                    ev.preventDefault();
                    var level = closest(el, 'mp-level').getAttribute('data-level');
                    if (self.level <= level) {
                        ev.stopPropagation();
                        self.level = closest(el, 'mp-level').getAttribute('data-level') - 1;
                        self.level === 0 ? self._resetMenu() : self._closeMenu();
                    }
                });
            });
        },
        _openMenu: function (subLevel) {
            // increment level depth
            ++this.level;

            // move the main wrapper
            var levelFactor = ( this.level - 1 ) * this.options.levelSpacing,
                translateVal = this.options.type === 'overlap' ? this.el.offsetWidth + levelFactor : this.el.offsetWidth;
            if(this.options.dockSide == 'right')
                this._setTransform('translate3d(-' + translateVal + 'px,0,0)');
            else
                this._setTransform('translate3d(' + translateVal + 'px,0,0)');
            if (subLevel) {
                // reset transform for sublevel
                this._setTransform('', subLevel);
                // need to reset the translate value for the level menus that have the same level depth and are not open
                for (var i = 0, len = this.levels.length; i < len; ++i) {
                    var levelEl = this.levels[i];
                    if (levelEl != subLevel && !classie.has(levelEl, 'mp-level-open')) {
                        if(this.options.dockSide == 'right')
                            this._setTransform('translate3d(100%,0,0) translate3d(' + levelFactor + 'px,0,0)', levelEl);
                        else
                            this._setTransform('translate3d(-100%,0,0) translate3d(' + -1 * levelFactor + 'px,0,0)', levelEl);
                    }
                }
            }
            // add class mp-pushed to main wrapper if opening the first time
            if (this.level === 1) {
                classie.add(this.wrapper, 'mp-pushed');
                this.open = true;
            }
            // add class mp-level-open to the opening level element
            classie.add(subLevel || this.levels[0], 'mp-level-open');
        },
        // close the menu
        _resetMenu: function () {
            this._setTransform('translate3d(0,0,0)');
            this.level = 0;
            // remove class mp-pushed from main wrapper
            classie.remove(this.wrapper, 'mp-pushed');
            this._toggleLevels();
            this.open = false;
        },
        // close sub menus
        _closeMenu: function () {
            var translateVal = this.options.type === 'overlap' ? this.el.offsetWidth + ( this.level - 1 ) * this.options.levelSpacing : this.el.offsetWidth;
            if(this.options.dockSide == "right")
                this._setTransform('translate3d(-' + translateVal + 'px,0,0)');
            else
                this._setTransform('translate3d(' + translateVal + 'px,0,0)');
            this._toggleLevels();
        },
        // translate the el
        _setTransform: function (val, el) {
            el = el || this.wrapper;
            el.style.WebkitTransform = val;
            el.style.MozTransform = val;
            el.style.transform = val;
        },
        // removes classes mp-level-open from closing levels
        _toggleLevels: function () {
            for (var i = 0, len = this.levels.length; i < len; ++i) {
                var levelEl = this.levels[i];
                if (levelEl.getAttribute('data-level') >= this.level + 1) {
                    classie.remove(levelEl, 'mp-level-open');
                    classie.remove(levelEl, 'mp-level-overlay');
                }
                else if (Number(levelEl.getAttribute('data-level')) == this.level) {
                    classie.remove(levelEl, 'mp-level-overlay');
                }
            }
        }
    }

    // add to global namespace
    window.mlPushMenu = mlPushMenu;

})(window);